calc.html

<FORM NAME="Calc">
    <TABLE BORDER=4>
    <TR>
    <TD>
    <INPUT TYPE="text"   NAME="Input" Size="16">
    <br>
    </TD>
    </TR>
    <TR>
    <TD>
    <INPUT TYPE="button" NAME="one"   VALUE="  1  " OnClick="Calc.Input.value += '1'">
    <INPUT TYPE="button" NAME="two"   VALUE="  2  " OnCLick="Calc.Input.value += '2'">
    <INPUT TYPE="button" NAME="three" VALUE="  3  " OnClick="Calc.Input.value += '3'">
    <INPUT TYPE="button" NAME="plus"  VALUE="  +  " OnClick="Calc.Input.value += ' + '">
    <br>
    <INPUT TYPE="button" NAME="four"  VALUE="  4  " OnClick="Calc.Input.value += '4'">
    <INPUT TYPE="button" NAME="five"  VALUE="  5  " OnCLick="Calc.Input.value += '5'">
    <INPUT TYPE="button" NAME="six"   VALUE="  6  " OnClick="Calc.Input.value += '6'">
    <INPUT TYPE="button" NAME="minus" VALUE="  -  " OnClick="Calc.Input.value += ' - '">
    <br>
    <INPUT TYPE="button" NAME="seven" VALUE="  7  " OnClick="Calc.Input.value += '7'">
    <INPUT TYPE="button" NAME="eight" VALUE="  8  " OnCLick="Calc.Input.value += '8'">
    <INPUT TYPE="button" NAME="nine"  VALUE="  9  " OnClick="Calc.Input.value += '9'">
    <INPUT TYPE="button" NAME="times" VALUE="  x  " OnClick="Calc.Input.value += ' * '">
    <br>
    <INPUT TYPE="button" NAME="clear" VALUE="  c  " OnClick="Calc.Input.value = ''">
    <INPUT TYPE="button" NAME="zero"  VALUE="  0  " OnClick="Calc.Input.value += '0'">
    <INPUT TYPE="button" NAME="DoIt"  VALUE="  =  " OnClick="Calc.Input.value = eval(Calc.Input.value)">
    <INPUT TYPE="button" NAME="div"   VALUE="  /  " OnClick="Calc.Input.value += ' / '">
    <br>
    </TD>
    </TR>
    </TABLE>
    </FORM>